Are complicated grief criteria better for diagnosing grief disorder than prolonged grief disorder criteria?—No.
In 2009, following the completion of a National Institutes of Health/National Institute of Mental Health–funded investigation of consensus criteria for disordered grief, we published validated criteria for a new diagnostic entity, prolonged grief disorder (PGD).1 Based on the results of this field trial, the Yale Bereavement Study (YBS), we proposed PGD’s inclusion in the DSM 5 and the International Statistical Classification of Diseases and Related Health Problems, Eleventh Revision (ICD-11). The strength of the evidence in support of PGD from the YBS, supplemented by confirmatory findings from multiple international studies, compelled both the DSM and ICD to include a new grief disorder.
Prigerson HG, Maciejewski PK. Rebuilding Consensus on Valid Criteria for Disordered Grief. JAMA Psychiatry. Published online March 29, 2017. doi:10.1001/jamapsychiatry.2017.0293